Apple

On Jun 8, 2008, at 2:24 PM, Allen Curtis wrote:

Ok, If I list the contents of the /dev directory, both before and after the device is connected, I do not see a new device file created. Could USB serial not be in the standard OS X kernel configuration?

Then I think you don't have the driver. I would guess that it is the prolific chip do a search and download that driver and see what you get.

Ben

In OS X, where are the hotplug events logged? I looked in /var/log/system.log but I don't see anything there.

I am running Linux in Parallels and it recognizes the USB serial device just fine.

TIA

- Allen

On Sun, Jun 8, 2008 at 9:54 AM, Allen Curtis <email@hidden> wrote:

Thanks Ben,

I had changed this like of code to match kIOSerialBSDAllTypes. The enumeration finds the Bluetooth modem and PDA sync but nothing from USB. I didn't see anything about matching but types.

Oh well, I guess the brute force method of specifying the device name directly will work.

- Allen

On Sun, Jun 8, 2008 at 4:00 AM, Ben Greenfield <email@hidden> wrote:

I'm only guessing but...

On Jun 8, 2008, at 12:00 AM, Allen Curtis wrote:

Is there a reason that the USB serial device is not part of the enumeration with the SerialPortSample project? The searching I had done implied that this should work.

I found this in the SerialPortSample.c file. My guess is that you have to add the modem to the service matching dictionary.

In iokit their are families of devices and to use a driver a device advertises it family class which gets matched in software. What is currently happen is SerialPortSample.c file is not finding the advertised device in it's dictionary of devices that can use the software.

CFDictionarySetValue(classesToMatch,
   CFSTR(kIOSerialBSDTypeKey),

   CFSTR(kIOSerialBSDModemType));

// Each serial device object has a property with key

// kIOSerialBSDTypeKey and a value that is one of kIOSerialBSDAllTypes,

// kIOSerialBSDModemType, or kIOSerialBSDRS232Type. You can experiment with the

// matching by changing the last parameter in the above call to CFDictionarySetValue.



// As shipped, this sample is only interested in modems,

// so add this property to the CFDictionary we're matching on.
// This will find devices that advertise themselves as modems,

// such as built-in and USB modems. However, this match won't find serial modems.

Thanks
Allen

On Sat, Jun 7, 2008 at 7:29 PM, Ben Greenfield <email@hidden> wrote:

On Jun 7, 2008, at 10:04 PM, Allen Curtis wrote:

Hello,

I have searched the mailing list for the answers to my question but it appears that what I have done should work.

I have purchase a USB to serial adapter from two different vendors. One from ioGear, the other from i.Connect. In both cases the device drivers where installed and I could see the device in the System Profiller. However when I run the SerialPortSample program, I only see the Bluetooth devices. The sample code has been modified to find any serial type device so both the PDA-Sync and Modem devices get reported, but I never see the USB serial devices.

I am running MAC OS X 10.5.3, with XCode 3.1. Shouldn't the USB serial devices enumerate just like the Bluetooth ones? What do I need to do?

I can't quite remember the details but doing an ls -la /dev/ should reveal the tty devices they will probably have a name that includes some sort of manufactuers signature.

If you can't find it that why do one ls -la without anything plugged in and the do another after plugging in the device compare and if there are addtions in the second one that is the serial device.

If I searched around I could give better advice but I figure at least this advice is a fast response and it may work for you.

Ben

TIA

- Allen
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References:
	>USB Serial - RS232 (From: "Allen Curtis" <email@hidden>)
	>Re: USB Serial - RS232 (From: Ben Greenfield <email@hidden>)
	>Re: USB Serial - RS232 (From: "Allen Curtis" <email@hidden>)
	>Re: USB Serial - RS232 (From: Ben Greenfield <email@hidden>)
	>Re: USB Serial - RS232 (From: "Allen Curtis" <email@hidden>)
	>Re: USB Serial - RS232 (From: "Allen Curtis" <email@hidden>)
	>Re: USB Serial - RS232 (From: Ben Greenfield <email@hidden>)